The TED conference is dedicated to innovation. Most of the people who give TED talks are working on some creative project: to invent new bionic limbs for amputees, new telescopes, new fusion reactors or new protest movements to reduce the power of money in politics.

The speakers generally live in hope and have the audacity of the technologist. Naturally enough, they believe fervently in their projects. “This will change everything!” they tell the crowds.

And there’s a certain suspension of disbelief as audiences get swept up in the fervor and feel themselves delightedly on the cutting edge. The future will be insanely great. Everything will change at the speed of Moore’s Law.

But at this year’s TED conference, which was held in Vancouver, the rock star Sting got onstage and gave a presentation that had a different feel. He talked about his rise to stardom and then about a period in middle age when he was unable to write any new songs. The muse abandoned him, he said — for days, then weeks, then months, then years.

But then he went back and started thinking about his childhood in the north of England. He’d lived on a street that led down to a shipyard where some of the world’s largest ocean-going vessels were built.

Most of us have an urge, maybe more as we age, to circle back to the past and touch the places and things of childhood. When Sting did this, his creativity was reborn. Songs exploded from his head.

At TED, he sang some of those songs about that shipyard. He sang about the characters he remembers and his desire to get away from a life in that yard. These were songs from his musical “The Last Ship,” which he’s performed at The Public Theater and which is expected to go to Broadway in the fall.

Most TED talks are about the future, but Sting’s was about going into the past. The difference between the two modes of thinking stood in stark contrast. In the first place, it was clear how much richer historical consciousness is than future vision. When we think about the future, we don’t think about the texture and the tensions, the particular smells, shapes, conflicts — the dents in the floorboards. But Sting’s songs were about unique and unlikely individuals and life as it really is, as a constant process of bending hard iron.

Historical consciousness has a fullness of paradox that future imagination cannot match. When we think of the past, we think about the things that seemed bad at the time but turned out to be good in the long run. We think about the little things that seemed inconsequential in the moment but made all the difference.

Then it was obvious how regenerating going home again can be. Sting, like most people who do this, wasn’t going back to live in the past; he was circling back and coming forward.

Going back is a creative process. The events of childhood are like the Hebrew alphabet; the vowels are missing, and the older self has to make sense of them. Robert Frost’s famous poem about the two paths diverging in the woods isn’t only about the two paths. It also describes how older people go back in memory and impose narrative order on choices that didn’t seem so clear at the time.

The person going back home has to invent a coherent tradition out of discrete moments and tease out future implications. He has to see the world with two sets of eyes: the eyes of his own childhood self and the eyes of his adult self. He has to circle back deeper inside and see parts of himself that were more exposed then than now. No wonder the process of going home again can be so catalyzing.

The process of going home is also reorienting. Life has a way of blowing you off course. People have a way of forgetting what they originally set out to do. Going back means recapturing the original aspirations. That’s one reason Jews go back to Exodus every year. It’s why Augustine went back during a moment of spiritual crisis and wrote a book about his original conversion. Heck, it’s why Miranda Lambert performs “The House That Built Me” — to remind herself of the love of music that preceded the trappings of stardom.

Sting’s appearance at TED was a nice reminder of how important it is to ground future vision in historical consciousness. Some of the TED speakers seemed hopeful and creative, but painfully and maybe necessarily naïve.

Sting’s talk was a reminder to go forward with a backward glance, to go one layer down into self and then after self-confrontation, to leap forward out of self. History is filled with revivals, led by people who were reinvigorated for the future by a reckoning with the past.